Roland EM-20 Operating and maintenance manual

SCREW 2,9 X13 TC TC PR TROP COD. J2289130
TABLE OF CONTENTS Page
SPECIFICATIONS 1
LOCATION OF CONTROLS EM-20 2
LOCATION OF CONTROLS EM-10 3
EXPLODED VIEW EM-20/EM-10 4
WIRING DIAGRAM EM-20/EM-10 5
KEYBOARD PARTS LIST 5
PARTS LIST EM-20/EM-10 6/7
BLOCK DIAGRAM (EM-20) 8
BLOCK DIAGRAM (EM-10) 9
MAIN PCB ASSY EM-20/EM-10 10
CIRCUIT DIAGRAM MAIN PCB ASSY (EM-20) 11
CIRCUIT DIAGRAM MAIN PCB ASSY (EM-10) 12
CPU PCB ASSY EM-20/EM-10 13
CIRCUIT DIAGRAM CPU PCB ASSY (EM-20) 14
CIRCUIT DIAGRAM CPU PCB ASSY (EM-10) 15
CONTROL PCB ASSY EM-20 16
CIRCUIT DIAGRAM CONTROL PCB ASSY (EM-20) 17
CONTROL PCB ASSY EM-10 18
CIRCUIT DIAGRAM CONTROL PCB ASSY (EM-10) 19
RIGHT CONTACT PCB ASSY w/RUBBER CONTACT & CIRCUIT DIAGRAM 20
LEFT CONTACT PCB ASSY w/RUBBER CONTACT & CIRCUIT DIAGRAM 20
TEST MODE 21/23
Specifications
EM-20/EM-10
1
EM-20
GENERAL
61-KEY
TOUCH SENSITIVE KEYBOARD
TOUCH CONTROLLER (Ribbon Controller)
TWO TRACK RECORDER (2nd Track)
BACKLIT CUSTOM DISPLAY
2 x 5 W RMS OUTPUT POWER
8 USER PROGRAM
4 BALANCES
REVERB & CHORUS switches
MELODY INTELLIGENT, LAYER (Upper 1/2)
BASS INVERSION
GENERATION & SOUNDS
24 VOICES POLYPHONY
16 MULTITIMBRAL PARTS
354 TONES AND 12 DRUM KITS
(New Tones - 8 MB PCM Samples)
GM-GS COMPATIBLE
STYLES
64 STYLES ON ROM
STYLE MANIPULATOR (Style Morphing+Style Progression)
MODE
Arranger, Organ, M. Drums
8 ONE TOUCH for each style
CONTROLLERS
PITCH BENDER - MODULATION SWITCHES
DIGITAL VOLUME
CONNECTIONS
REAR POWER SWITCH
JACK OUTPUT (L/mono - R)
SUSTAIN FOOT SWITCH
2 x REAR HEADPHONES
MIDI IN-OUT
POWER SUPPLY 12V 1A ACO Adaptor (230V)
For the other voltages see on page. 7
DIMENSIONS
960 (W) X 380 (D) X 128 (H ) mm
WEIGHT
7.10 Kg
ACCESSORIES
See details on page 7
EM-10
GENERAL
61-KEY
TOUCH SENSITIVE KEYBOARD
TWO TRACK RECORDER (2nd Track)
BACKLIT CUSTOM DISPLAY
2 x 3 W RMS OUTPUT POWER
8 USER PROGRAM
2 BALANCES
CHORUS/REVERB switch
MELODY INTELLIGENT
GENERATION & SOUNDS
24 VOICES POLYPHONY
16 MULTITIMBRAL PARTS
226 TONES AND 9 DRUM KITS
(1 MB PCM Samples)
GM-GS COMPATIBLE
STYLES
64 STYLES ON ROM
STYLE MANIPULATOR (Style Morphing+Style Progression)
MODE
Arranger / M. Drums
8 ONE TOUCH for each style
CONTROLLERS
DIGITAL VOLUME
CONNECTIONS
REAR POWER SWITCH
SUSTAIN FOOT SWITCH
REAR HEADPHONES 1/OUT
REAR HEADPHONES 2
MIDI IN-OUT
POWER SUPPLY 12V 500mA ACN Adaptor (230V)
For the other voltages see on page. 7
DIMENSIONS
960 (W) X 380 (D) X 128 (H ) mm
WEIGHT
7.00 Kg
ACCESSORIES
See details on page 7
July, 1999
Issued by RES
SN00029 K6018357 Printed in Italy (AC00) (AD) Copyright © 1999 by ROLAND CORPORATION
All rights reserved. No parts of this publication may be reproduced in any form whithout the written permission of ROLAND CORPORATION.
SERVICE NOTES
DISASSEMBLY

CREATIVE KEYBOARD
EM-20
=
INTRO ORIGINAL VARIATION ENDING START
FILL
REV
UPPER 1
TEMPO
ST YLE
TOUCH CONTROLLER
STYLE / SONGPITCH SHIFT
USER PROGRAMONE TOUCH
ASSIGN
TRANSPOSE
METRONOME
MODULATION
SYNC STARTCHORUS
VOLUME
STYLE
MANIPULATOR
1
ARRANGER ORGAN M.DRUMS INTEL/LAYER UPPER 1/2
2
REED
PIANO CHR PERC ORGAN GUITAR BASS ORCHESTRA ENSEMBLE BRASS
PIPE SYN LEAD SYN PAD SYN SFX ETHNIC PERCUSSIVE SFX
345678
BALANCE
BASS
INVERSION
KEYBOARD
VELOCITY
FILLINTRO VARIATION ENDING
WRITE
DRUMS BASS ACC/LOWER UPPER AB
START / STOP
REVERB
POP 50’s & 60’s JAZZ LATIN VARIETY 2VARIETY 1 ACOUSTICROCK & DANCE
MORPHING
STYLE
mg
CONTROLLER
TOUCH
DEMO
REC
ORIGINAL
VARIATIONA/B
TONE
2nd Track
MODE
On/Off
A
B
STYLE
TONE
TEMPO +
DATA
DATA DATADATA
DATA
DATA
DATA
DATA
DATADATA
DATADATA
SUSTAIN
FOOTSWITCH
ADAPTOR ONLY
DC IN 12V 1APOWER
USE ROLAND ACO/ACJ
PHONES 1 MIDI OUT
IN 2
R
STEREO
OUTPUT
L / MONO
EM-20
REAR VIEW
BUTTON 11x11 (DARK GREY) 8218
Cod. K2478282
BUTTON 11x11 (LIGHT GREY) 8035
Cod. K2478278
BUTTON 11x11 (LIGHT GREY) 8035
Cod. K2478278
BUTTON 11x11 (YELLOW) 2550
Cod. K2478272
BUTTON 24x11 (LIGHT GREY)
Cod. K2478267
BUTTON 17x11 (LIGHT GREY)
Cod. K2478273
BUTTON 17x11 (YELLOW) 2550
Cod. K2478280
TILTING 2-BUTTON GROUP (YELLOW)
Cod. K2478275
TILTING 4-BUTTON GROUP 2550 (YELLOW)
Cod. K2478277
TILTING 2-BUTTON GROUP (GREY)
Cod. K2478274
BUTTON 17x11 (YELLOW) 2550
Cod. K2478280
BUTTON 17x11 (DARK GREY)
Cod. K2478281
BUTTON 11x7 (DARK GREY) 8218
Cod. K2478270
BUTTON 11x7 (YELLOW)
Cod. K2478269
BUTTON 11x11 (LIGHT GREY) 8035
Cod. K2478278
BUTTON 11x7 (LIGHT GREY)
Cod. K2478271
BUTTON 11x11 (RED) 5505
Cod. K2478279
DC SUPPLY SOCKET HEC 2305-01-230
Cod. 13449726
DIN SOCKET MG/PR 5L
Cod. 13429664RI JACK SOCKET YKB 21-5006
Cod. 13449252
JACK SOCKET HLJ0520-01-110
Cod. 13449125
SPUN SWITCH 19F
Cod. 13129369
2
EM-20/EM-10 July, 1999
LOCATION OF CONTROLS EM-20

3
EM-20/EM-10
July, 1999
CREATIVE KEYBOARD
EM-10
=
INTRO ORIGINAL VARIATION ENDING START
FILL
REV
UPPER 1
TEMPO
ST YLE
STYLE / SONG
USER PROGRAMONE TOUCH
TRANSPOSE
METRONOME
SYNC STARTCHORUS/REVERB
VOLUME
STYLE
MANIPULATOR
1
ORGAN INTEL
2
REED
PIANO CHR PERC ORGAN GUITAR BASS ORCHESTRA ENSEMBLE BRASS
PIPE SYN LEAD SYN PAD SYN SFX ETHNIC PERCUSSIVE SFX
345678
BALANCE
KEYBOARD
VELOCITY
ARRANGER/
M.DRUMS
FILLINTRO VARIATION ENDING
WRITE
ARR/LOWER UPPER AB
START / STOP
POP 50’s & 60’s JAZZ LATIN VARIETY 2VARIETY 1 ACOUSTICROCK & DANCE
MORPHING
STYLE
mg
DEMO
REC
ORIGINAL
VARIATIONA/B
TONE
2nd Track
On/Off
A
B
STYLE
TONE
TEMPO +
DATA
DATA
DATADATA
DATA
DATA
SUSTAIN
FOOTSWITCH
MIDI OUT
IN
EM-10
OUT
ADAPTOR ONLY
DC IN 12V 500mAPOWER
USE ROLAND ACN
PHONES 1
2
LOCATION OF CONTROLS
REAR VIEW
TILTING 4-BUTTON GROUP 2550 (YELLOW)
Cod. K2478277
BUTTON 17x11 (LIGHT GREY)
Cod. K2478273
TILTING 2-BUTTON GROUP (GREY)
Cod. K2478274
TILTING 2-BUTTON GROUP (YELLOW)
Cod. K2478275
BUTTON 11x11 (RED) 5505
Cod. K2478279
BUTTON 11x7 (YELLOW)
Cod. K2478269
BUTTON 11x11 (DARK GREY) 8218
Cod. K2478282
BUTTON 11x11 (LIGHT GREY) 8035
Cod. K2478278
BUTTON 11x11 (YELLOW) 2550
Cod. K2478272
BUTTON 17x11 (YELLOW) 2550
Cod. K2478280
BUTTON 17x11 (YELLOW) 2550
Cod. K2478280
BUTTON 24x11 (LIGHT GREY)
Cod. K2478267
BUTTON 11x11 (LIGHT GREY) 8035
Cod. K2478278
BUTTON 11x11 (LIGHT GREY) 8035
Cod. K2478278
BUTTON 11x7 (LIGHT GREY)
Cod. K2478271
BUTTON 11x7 (LIGHT GREY)
Cod. K2478271
DC SUPPLY SOCKET HEC 2305-01-230
Cod. 13449726
DIN SOCKET MG/PR 5L
Cod. 13429664RI
JACK SOCKET YKB 21-5006
Cod. 13449252
JACK SOCKET HLJ0520-01-110
Cod. 13449125
SPUN SWITCH 19F
Cod. 13129369
LOCATION OF CONTROLS EM-10

EM-20/EM-10 July, 1999
EXPLODED VIEW EM-20/EM-10
A
C
C
B
D
1
2
3
4
8
10
11
12
9
5
5a
6
7
EXPLODED VIEW EM-20 / 10
No
1
2
3
4
5
5a
6
7
8
9
10
A
B
C
D
11
12
PARTS NAMES
SILKSCREENED TOP CABINET for EM-20
SILKSCREENED TOP CABINET for EM-10
SILKSCREENED PLEXIGLASS for EM-20
SILKSCREENED PLEXIGLASS for EM-10
SPEAKER PROTECTION
LOUDSPEAKER CF120078-01
SENSOR SUPPORT for EM-20
RIBBON SENSOR for EM-20
LCD + CONNECTIONS ASSY
MYLAR SHIELD MM 115x115 for EM-20
CONTROLS PCB ASSY for EM-20
CONTROLS PCB ASSY for EM-10
BUSHING H 11,5 I/D 6 E/D 8
MAIN BOARD PCB ASSY for EM-20
MAIN BOARD PCB ASSY for EM-10
SELF TAP SCREW 2,9x8TCTCPRBZ
SCREW 3,5 x 9,5 TC PR TFR H.8
SELF LOCK SCREW M3x6H.6
POWER SWITCH CAP (BLACK) 1420
CPU MODULE ASSY for EM-20
CPU MODULE ASSY for EM-10
SCREW 2,9 x 10 TC TC PR TROP
PARTS NUMBERS
7711004000
7711104000
7711005000
7711105000
K2248149
K2418107
K2198105
01121790
7711006000
K2258119
7711003000
7711101000
K2158107
7711001000
7711102000
J2289125
J2289126
J2289115
J2289193
K2478266
7711002000
7711103000
4

5
EM-20/EM-10
July, 1999
WIRING DIAGRAM EM-20/EM-10
LCD PCB ASSY
22
1616
CN4 CN3 16 16
CN2
AMPC1.2716P AMPC1.2716P
RIBBON
CONTROL PCB ASSY
AMPC1.2720P
CN5
8
ZIF 5597-08APB
20
CN1
DC IN
12V
14
POWER
SWITCH
ITAROL-M005
J
5045-04A
4
+
+
left
Right
CN3
J
DC IN
PHONES
12
JJ
OUTPUT
CN5
AMPC1.2714P
CN4
20 14
MAIN PCB ASSY
L/M R
IN OUT
DD
MIDI
J
DAMP.
PEDAL
AMPC1.2720P
AMPC1.2714P CN3
CN10 CPU MODULE
PCB ASSY
AMPC1.2714P
LEFT CONTACT PCB ASSY RIGHT CONTACT PCB ASSY
ÀÁ
Â
Ã
Ç
Only on EM-20
Only on EM-20
DO DO
61-KEY KEYBOARD TP/7BA 2° code 7626921001
1
2
3
4
5
6 8 7 9
11
10
PARTS NAME DOUBLE HEADED SPRING NATURAL KEY C5 DO
RE MI FA
SOL
LA SI
DO(F)
NATURAL KEY D6 NATURAL KEY E7 NATURAL KEY F1 NATURAL KEY G2 NATURAL KEY A3 NATURAL KEY B4 NATURAL KEY C8 SHARP KEY SCREW 2,9x10 TCTCPR TROP 12P RUBBER CONTACT 13P RUBBER CONTACT LEFT CONTACT PCB ASSY+RUBBER C. CH. RIGHT CONTACT PCB ASSY+RUBBER C. CH. KEYBOARD SUPPORT 61 KEYS RUBBER END STROKE ADHESIVE RUBBER8x2,5x848
CODE RJA
Num.
22178226 61 J2579123 5 J2579124 5 J2579125 5 J2579126 5 J2579127 5 J2579128 5 J2579129 5 J2579130 1 22578318 25 J2289125 34
2218523802 4
2218523902 1
7624505001 1
7624504001 1
22818746 1 22158789 61 22358151 1
N
O.
2
3
56
1
PM
SM
4
CONTACT BOARDS ARE COMPLETE WITH RUBBER CONTACTS
*
*
11
9
7
10 8
12P RUBBER CONTACT 12P RUBBER CONTACT 12P RUBBER CONTACT 12P RUBBER CONTACT 13P RUBBER CONTACT
8P+4P
ASSEMBLY OF RUBBER CONTACT
KEYBOARD PARTS LIST
1K3468159 16P FLAT CABLE ASSY (72) -2C 2K3468209 16P FLAT CABLE ASSY (82) -2C for EM-10
K3468158 16P FLAT CABLE ASSY (62) -2C for EM-20
37700612000 14P CABLE ASSY (30) -C1A+1H 4K3468208 4P CABLE (30/74) (W-4PC)

EM-20/EM-10 July, 1999
PARTS LIST EM-20/EM-10 (117V/230V/230VE/240VA)
SAFETY PRECAUTIONS :
The parts marked have
safety-related characteristics.
Use only listed parts for
replacement.
!
When ordering any parts listed in the parts list,please specify the following items in the order sheet.
QTY PART NUMBER DESCRIPTION MODEL NUMBER
Ex. 10 22575241 Sharp Key C-20/50
15 2247017300 Knob (orange) DAC-15D
Failure to completely fill the above items with correct number and description will result in delayed or
even undelivered replacement.
CONSIDERATION ON PARTS ORDERING
CASING
# K2198106 MUSIC REST (BLUE) EM-10/20
# K2018119 PLASTIC BOTTOM EM-10/EM-20
# K2248149 SPEAKER PROTECTION EM-10/20
# 7711004000 SILKSCR. TOP CABINET EM-20 only for EM-20
# 7711005000 SILKSCR. PLEXIGLASS EM-20 only for EM-20
# 7711104000 SILKSCR. TOP CABINET EM-10 only for EM-10
# 7711105000 SILKSCR. PLEXIGLASS EM-10 only for EM-10
KNOB BUTTON
K2478266 POWER SWITCH CAP (BLACK) 1420
K2478267 BUTTON 24X11 (LIGHT GREY)
K2478269 BUTTON 11X7 (YELLOW)
K2478270 BUTTON 11X7 (GREY) 8218 only for EM-20
K2478271 BUTTON 11X7 (LIGHT GREY)
K2478272 BUTTON 11X11 (YELLOW)
K2478273 BUTTON 17X11 (LIGHT GREY)
K2478274 TILTING 2-BUTTON GROUP (GREY)
K2478275 TILTING 2-BUTTON GROUP (YELLOW)
K2478277 TILTING 4-BUTTON GROUP 2550 (YELLOW)
K2478278 BUTTON 11X11 (LIGHT GREY) 8035
K2478279 BUTTON 11X11 (RED) 5505
K2478280 BUTTON 17X11 (YELLOW) 2550
# K2478281 BUTTON 17X11 (DARK GREY) 8218 only for EM-20
# K2478282 BUTTON 11X11 (DARK GREY) 8218
SWITCH
13129369 SPUN SWITCH 19F SW1 on MB
J3169105 SWITCH TP-1101A / EQV-PAE 05 R All on CB
JACK, SOCKET
13449252 JACK SOCKET YKB 21-5006 JK1, JK8 on MB
13449125 JACK SOCKET HLJ0520-01-110 JK3, JK4, JK7 on MB EM-20 / JK7 on MB EM-10
13429664RI DIN SOCKET MG/PR 5L JK5, JK6 on MB
13449726 DC SUPPLY SOCKET HEC 2305-01-230 JK2 on MB
DISPLAY UNIT
NNoottee7711006000 LCD+CONNECTIONS ASSY EM-10/EM-20
SPEAKER
K2418107 LOUDSPEAKER CF120078-01
KEYBOARD ASSY
# 7626921001 61 KEY KEYBOARD TP/7BA 2ND
NOTE : For details, refer to KEYBOARD PARTS LIST (Page 5)
PCB ASSY
7711001000 MAIN BOARD PCB ASSY EM-20 for EM-20
# 7711002000 CPU MODULE ASSY EM-20 for EM-20
7711003000 CONTROLS PCB ASSY EM-20 for EM-20
7711101000 CONTROLS PCB ASSY EM-10 for EM-10
7711102000 MAIN BOARD PCB ASSY EM-10 for EM-10
# 7711103000 CPU MODULE ASSY EM-10 for EM-10
7624504001 RIGHT CONTACT PCB ASSY W/RUBBER CH.
7624505001 LEFT CONTACT PCB ASSY W/RUBBER CH.
E
E
!
!
IC
15229718RI PHOTO-COUPLER 6N 137 IC8 on MB
K525814910 I.C. ROM K525814910 EM-50 IC9 on CPU only for EM-20
K525815210 I.C. ROM 16M 100NS EM-20 IC13 on CPU only for EM-20
K525815310 I.C. ROM 8M 100NS M-10 IC9 on CPU only for EM-10
K525815410 I.C. ROM 16M 100NS EM-10 IC13 on CPU only for EM-10
J5259109 I.C. HD6415108F10 FLAT CPU IC2 on CPU
J5159106 I.C. 74 HC238 CMOS IC6, 8, 9 on CB
15249111 I.C. TC7WU04 FLAT CMOS IC3 on CPU
J5259107 I.C. HM628128ALFP-7 FLAT SRAM IC4, 5 on CPU
J5259110 I.C. HM62256LFP-7T FLAT SRAM IC6 on CPU
15239229 I.C. TC6116-GP4 (CUSTOM IC) IC1 on CPU
15259884 I.C. TC7S08F MOS CMOS IC7, 8 on CPU only for EM-20
15259883 I.C. TC7S00F TE85L CMOS IC10 on CPU
15259887 I.C. TC7SU04F FLAT CMOS IC11 on CPU
J5259126 I.C. TC7SH32F FLAT IC12 on CPU
15219183 I.C. M51953 AL (STANDING) IC7 on MB
15189251 I.C. M5218 P (OP AMP) IC4, 5 on MB
15289702 I.C. UPD6376 DAC IC6 on MB
J5199110 I.C. L4940V5 IC3 on MB
15199550RI I.C. TDA 1905 (POWER AMP) IC1, 2 on MB
TRANSISTOR
15119155RI TRANSISTOR BC/560-B Q10, 11 on MB
J5119101 TRANSISTOR BD 371 C Q7 on MB
15119154RI TRANSISTOR BC/549-B Q1, 2, 8, 9, 12 on MB
15129136 TRANSISTOR 2SC-2878-A/B Q3, 4, 5, 6 on MB EM-20 / Q5, 6 on MB EM-10
DIODE
15019159RI DIODE 1N-4148 on CB / on RCB / on LCB
15339114 DIODE RB420D T146 D1 on CPU
J5019101 ZENER DIODE BZX55C 4V7 D4 on MB
15019332RI ZENER DIODE BZX79C 6.2V D2 on MB
# J5019116 DIODE TRANSIL BZW04-5V8B D65 on CB only for EM-20
15091172RI DIODE BY 251 D3 on MB
J5019105 DIODE 1N 4002 D1 on MB
RESISTOR
J3919104 RESISTOR ARRAY EXB-A10E-103-J RA1, 2, 3, 4, 7, 8, 10 on CPU
J3919107 RESISTOR ARRAY EXB-V8V-101-JV RA6, 12, 13, 14, 15, 16 on CPU
J3919108 RESISTOR ARRAY EXB-V8V-103-JV RA5, 9, 11 on CPU
13819132RI UNINFL.RES. 100 OHM 0.6W 5% R7, 8, 22, 83, 84 on MB
J3809139 OXIDE RESISTOR 2.2 OHM 3W R27 on MB
CAPACITOR
J3519117 CERAM.COND. 4.7NF 25V 20% C69 on MB
13639154 ELECTRL.COND.-V 1000UF 16V C36 on MB
J3629134 ELECTRL.COND.-V 2200UF 16V C7, 11 on MB
13639661RI ELECTRL.COND.-V 2200UF 25V C2 on MB
13649662RI ELECTRL.COND.-V 3300UF 25V C1 on MB
J3629103 ELECTRL.COND. 100UF 25V P.5 C3, 37, 53, 54, 67 on MB
J3629133 ELECTROL.COND. 22UF 25V P.5 C6, 10 on MB
J3629104 ELECTRL.COND 10UF 50V P.5 C4, 8, 24, 35, 41 on MB
J3629105 ELECTRL.COND. 47UF 50V P.5 C5, 9, 12, 38, 56, 63 on MB
J3629106 ELECTRL.COND. 4.7UF 63V P.5 C25, 26, 62, on MB
J3629107 ELECTRL.COND. 1UF 100V P.5 C27, 28, 29, 30, 31, 32, 55 on MB
J5369101 ELECTR. COND. 22UF 16V (SMD) C14, 15, 16, 17, 32, 33 ,34, 55 on CPU
J3629149 ELECTR.COND. 100UF 16V H.7 C6 on CB
J3629143 ELECTR. COND. 10UF 16V H.7 C10 on CB only for EM-20
J3629137 ELECTR. COND. 33UF 16V H.7 C4 on MB
13649103J0 UNPOL.COND. 10UF 16V P.5 C39, 40, 42, 43, 44, 45 on MB
13659306 SPEC. COND. 0.047F 5.5V RAD. C28 on CPU
13529147RI CAPACITOR ARRAY 8X100 PF CA1, CA2 on CB
INDUCTOR, COIL, FILTER
<<EMI>> 12449382RI NOISE SUP. PLT1-R53C L4 on MB
<<EMI>> 12449370 NOISE SUP. SBT-0160W L9, 11, 12 on MB
<<EMI>> 12449326 NOISE SUP. SBT-0460 L10 on MB
<<EMI>> J2399101 NOISE SUP. BL03RN2-R62T2 L1, 2, 3, 13, 14, 15 on MB
<<EMI>> 13529187 NOISE SUP. ELKTR391CA FL1, 3, 4 on MB EM-20 / FL1 on MB EM-10
<<EMI>> 12449380 NOISE SUP. EXC-ELDR25V L5, 6, 7, FL2 on MB EM20 /
L5, FL2 on MB EM-10
!
!
!
!
NOTE:
#The parts marked " #'' are new (Initial Parts).
The parts marked have Safety - Related characteristics.
Use only listed parts for replacement.
<< EMI >> Component for EMC.
NNoottee ::Replacement should be made on a unit basis. No replacements available for individual parts.
Replacement only be a unit.
!
!
6
MB = MAIN BOARD
CPU = CPU MODULE BOARD
CB = CONTROLS BOARD
RCB = RIGHT CONTACT BOARD
LCB = LEFT CONTACT BOARD

EM-20/EM-10
July, 1999
7
CRYSTAL, RESONATOR
00894023 QUARTZ 20000 MHZ MA-406 X1 on CPU
CONNECTOR
13419677RI 16P FEM. CONNECTOR AMP 1.27 CN3, 4 on CB / CN3 on RCB /
CN4 on LCB
13369689RI 20P FEM. CONNECTOR AMP 1.27 CN4 on CPU
# J3429122 14P FEM. CONNECTOR AMP 1.27 CN3, 5 on CPU
# J3429123 8P FEM. CONNECTOR IL-404-08S-LW only for EM-20 CN5 on CB
13369688RI 4P MALE CONN. P 2.5 M CN3 on MB
WIRING, CABLE
# K3468208 4P CABLE (30/74) (W-4PC) CN3 on MB to SPEAKERS
# K3468209 16P FLAT CABLE ASSY (82) 2C CN3 on CB to CN3 on RCB only for EM-10
K3468158 16P FLAT CABLE ASSY (62) 2C CN3 on CB to CN3 on RCB only for EM-20
K3468159 16P FLAT CABLE ASSY (72) 2C CN4 on CB to CN4 on LCB
# J3469158 AWG18-CBL (7)+FASTON on LCD ASSY
# 7700612000 14P CABLE ASSY (30) -C1A+1H CN5 on CPU to LCD ASSY
SCREW
J2289122 SCREW 2.2X6 TC TC BRUN
J2289126 SELF TAP.SCREW 2.9X 8 TCTCPRBZ
J2289125 SCREW 2.9X10 TC TC PR TROP
J2289130 SCREW 2.9X13 TC TC PR TROP
J2289108 SELF LOCK.SCREW M3X10 TCTC H.6
J2289193 SELF LOCK.SCREW M3X6 TC TC H.6
J2289115 SCREW 3.5X9.5 TC PR TFR H.8
# K2158107 BUSHING H.11.5 I/D 6 E/D 8
PACKING
# K2638217 RIGHT POLYST. END-SIDE EM-20/EM-10
# K2638218 LEFT POLYST. END-SIDE EM-20/EM-10
K2678105 CARTENE ENVELOPE HD 140X57
K2678106 POLYETH.ENVELOPE 4OX55
# K2618209 OUTER PACKING EM-20 only for EM-20
# K2618210 OUTER PACKING EM-10 only for EM-10
MISCELLANEOUS
J2359101 SPACER 3M ART. SJ5012
# K2258119 MYLAR SHIELD MM 115X115 EM-20 only for EM-20
# 01121790 RIBBON SENSOR only for EM-20
1342982301 POWER SUPPLY SOCKET HOLDER N°2
# K2198105 SENSOR SUPPORT EM-20 only for EM-20
ACCESSORIES
# K6018344 OWNER'S MANUAL (E/D/F)* EM-20 only for EM-20
# K6018345 MIDI IMPLEMENT. MANUAL EM-10/20/30/50
# K6018354 OWNER'S MANUAL (IT/SP/OL)*EM-20 only for EM-20
# K6018355 OWNER'S MANUAL (E/D/F)*EM-10 only for EM-10
# K6018356 OWNER'S MANUAL (IT/SP/OL)* EM-10 only for EM-10
K2448106 POWER ADAPTOR ACO 230V 12V 1A (230V) only for EM-20)
K244810101 P. ADAPTOR ACN 230V 12V 500MA (230V) only for EM-10
K2448107 POWER ADAPTOR ACO 230VE 12V 1A (230VE)
K2448108 POWER ADAPTOR ACO 240VA 12V 1A (240VA)
K2448109 POWER ADAPTOR ACO 120V 12V 1A (117V)
(E/D/F)* = English/ German/ French
(IT/SP/OL)* = Italian/ Spanish/ Dutch
!
!
!
!
!

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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10 July, 1999
BLOCK DIAGRAM EM-20
8
K
E
Y
B
O
A
R
D
SWITCH
MATRIX
MUX
IC6
IC8-IC9
MUXs
CONTROL BOARD
CPU
EA0-14
ED0-7
CS\ A0-14 D0-7
A0-23
CA0-5
ECS
EWE
CD0-7
LD0-7
CA10-19
IC5
DATA BUS
ADDRESS BUS
P60-7
P50-4
RIBBON
CONTROL
LCD
LERD
RWWR
RSCD H8-510
IC4
D0-15
D8-15
SRAM
SRAM
XCS5
AN2
D0-7
A0-14
WE/
Q6
POWER SUPPLY
+5V +9V VL+ VR+
CS/
IC6
MUTE
CONTROL
Q1 Q2
L
R
IC1
IC2
IC3
SRAM
ITAROLM005
OE/
1
2
3
+
-
1 2
POWER
SWITCH
POWER
AMPLIFIER
POWER
AMPLIFIER
L
E
F
T
R
I
G
H
TVL+
VR+
DCIN
4 Ohm
4 Ohm
12V 1A
JK2
8
7
3
2
4
5
1
8
7
3
2
4
5
1
P
H
O
N
E
S
1
PHONES 1
PHONES 2
JK1
JK8
3
1
2
3
1
2
LEFT/MONO
RIGHT
O
U
TJK4
JK3
MAIN BOARD
LPF
LPF
MUTE
MUTE
MUTE
CONTROL
MUTE
MUTE
AMP
AMP
A0-20
D0-7
Q5
Q3
Q4
DAC
LOUT
ROUT
SI
CLK
LRCK
Q8
Q9
WAVE
ROM
Q10
IC5 IC4
IC6
IC7
IC1
IC9
RESET
A21
A22
IC7-8
CS/
OE/
ENC
RES\
X1
XTAL
CS\
20MHz
WA0-20
WD0-7
DACC
SD
SCK
IRQ0
IRQ2
RES\
GP4
CK
IOCK
GPINT
GAINT
WAIT WAIT
PHAI12MHz
24MHz
IC2A0-18 D0-7
ROM
CS\
CPU MODULE
P9-0
A19
AN3
TXD1
RXD1
WCS0
WCS1
WCS2
IC13
14
2
53
OUT
M
I
D
I
14
2
53
INPhoto
3
1
2
SUSTAIN
IC8
JK6
JK7
JK5

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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10
July, 1999
BLOCK DIAGRAM EM-10
K
E
Y
B
O
A
R
D
SWITCH
MATRIX
MUX
IC6
IC8-IC9
MUXs
CONTROL BOARD
CPUEA0-14
ED0-7
CS\ A0-14 D0-7
A0-23
CA0-5
ECS
EWE
CD0-7
LD0-7
CA10-19
IC5
DATA BUS
ADDRESS BUS
P60-7
P50-4P72
LCD
LERD
RWWR
RSCD
H8-510
IC4
D0-15
D8-15
SRAM
SRAM
XCS5
D0-7
A0-14
WE/
Q6
POWER SUPPLY
+5V +9V VL+ VR+
CS/
IC6
MUTE
CONTROL
Q1 Q2
L
R
IC1
IC2
IC3
SRAM
ITAROLM005
OE/
1
2
3
+
-
1 2
POWER
SWITCH
POWER
AMPLIFIER
POWER
AMPLIFIER
L
E
F
T
R
I
G
H
T
VL+
VR+
DCIN
4 Ohm
4 Ohm
JK2
8
7
3
2
4
5
1
8
7
3
2
4
5
1
P
H
O
N
E
S
1
PHONES 1
PHONES 2
JK1
JK8
AUX OUT
12V 500mA
MAIN BOARD
LPF
LPF
MUTE
CONTROL
MUTE
MUTE
AMP
AMP
A0-19
D0-7
Q5
DAC
LOUT
ROUT
SI
CLK
LRCK
Q8
Q9
WAVE
ROM
Q10
IC5 IC4
IC6
IC7
IC1
IC9
RESET
CS/
OE/
RES\
X1
XTAL
CS\
20MHz
WA0-19
WD0-7
DACC
SD
SCK
IRQ0
IRQ2
RES\
GP4
CK
IOCK
GPINT
GAINT
WAIT WAIT
PHAI12MHz
24MHz
IC2A0-18 D0-7
ROM
CS\
CPU MODULE
P9-0
A19
AN3
TXD1
RXD1
WCS0
WCS1
WCS2
IC13
14
2
53
OUT
M
I
D
I
14
2
53
INPhoto
3
1
2
SUSTAIN
IC8
JK6
JK7
JK5
9

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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10 July, 1999
MAIN PCB ASSY
ASSY 7711001000 for EM-20
ASSY 7711102000 for EM-10
View from component side
10

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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10
July, 1999
CIRCUIT DIAGRAM (MAIN PCB ASSY EM-20)
11
LEFT
T
O
M
A
I
N
S
E
C
T
.
POWER SECTION
P
H
O
N
E
S
1
2
V
S
2
OUT 1 MUTE
5
IN+
8
IN-
6SVR 7
THR 4
G
1
6
G
1
5
G
1
4
G
1
3
G
1
2
G
1
1
G
1
0
G
9
B
S
3
IC2
TDA1905
C8
10uF25 C9
47uF16 C11
2200uF16
C33
100nFC
R17
10K
C14
100nF
R16
100
1/4W
VI
1
G
N
D
3
VO 2
IC3
L4940V5
TO-220 with heat-sink
C24
10uF16
C34
100nFC
8
7
3
2
4
5
1
JK1
YKB21_5006
L3
L1
L2
C30
1uF50
8
7
3
2
4
5
1
JK8
YKB21_5006
L13
L14
L15
AGND
DGND
DGND
9V
5VA
5VA
VPD
5VA
R8
100I
R7
100I
R83
100I
R84
100I
L1=L2=L3=L13=L14=L15=BLO3RN2-R62T2
1
2
D1
1N4002
RIGHT
+
-
12V/1A
FROM MAIN SECT.
AGND
LOUT
FROM MAIN SECT.
R6
10K
V
S
2
OUT 1 MUTE
5
IN+
8
IN-
6SVR 7
THR 4
G
1
6
G
1
5
G
1
4
G
1
3
G
1
2
G
1
1
G
1
0
G
9
B
S
3
IC1
TDA1905
C2
2200uF25 C3
100uF25
C5
47uF16 C7
2200uF16
C19
100nF
C20
100nF
R27
2.2 3W
1
2
4
3
L4
PLT1-R53C
EMI_FILTER
C29
1uF50
C4
10uF25
C13
100nF
R5
100
1/4W
1 2
SW1
SPUN 19F
C1
3300uF25
12
D3
BY251
2
1
CN8
CONN_2X1
2
1
CN9
CONN_2X1
R22 100I
R87
0 NIU
R82
0
R81
0
R80
0
R79
0
NIU
R78
0
NIU
1
2
3
JK2
HEC-2305-01-230
R
AGND
ROUT
R1
10K
R3
2K2
R4
820
R14
47K
C12
47uF16
C15
220nF
C18
33nF
5%
1
2
D2
BZX79C6V2
R24
nc
C21
nc
5%
R26
470
R2
1
1/4W
C28
1uF50
R70
2K7
C25
4.7uF25
C27
1uF50
C6
22uF16
R13
100
R12
10K
R11
10K
R10
4K7
R15
150K
2
1
3
Q2
BC549B
R9
1K 2
1
3
Q1
BC549B
VPD
5VA
R69
2K2
T
O
S
P
E
A
K
E
R
S
GND
LSR
GND
LSL
High Freq. Boost
Low Freq. Boost
LEFT RIGTH
R19 C17 R23 C22
R4 C18 R24 C21
L
R18
10K
R19
820
C16
220nF
C17
33nF
5%
R23
nc
C22
nc
5%
R25
470
3
4
2
1
CN3
5045-04A
R20
1
1/4W
C31
1uF50
R72
2K7
C26
4.7uF25
C32
1uF50
C10
22uF16 R21
2K2
R71
2K2
t
o
p
o
w
e
r
s
e
c
t
.
AGND
ROUT
AGND
LOUT
1
2
D4
BZX79C4V7
2
1
3
Q10
BC560B
R45 1K
R47 1K
R48
1K
R51
47K
C55
1uF50
2
1
CN4
CONN_2X1
2
1
CN5
CONN_2X1
9VA
3
1
2
Q6
2SC2878
3
1
2
Q5
2SC2878
-4V
XRES
f
r
o
m
p
o
w
e
r
s
u
p
p
l
y
C36
1000uF16
C37
100uF16
C38
47uF16
C44
10uF16BP
L5
EXCELDR25V
C51 330pF
C56
47uF16
2
3
1
84
IC4A
M5218P
2
3
1
84
IC5A
M5218P
C60 82pF
2
13
Q7
BD371
2
1
3
Q8
BC549B
2
1
3
Q9
BC549B
R32 15K
R38
12K
R40 1K
R46 1K
R49
220K
R50
47K
R52
47K
R53 27K
R55
100K
R58
4K7
R59
220K
R60
nc
AGND
DGND
DGND
9V
5VA
5VA
5VA 5VD 9VA
8V 9VA
L8
EXCELDR25V
NIU
C46
1000uF16
NIU
R34
2K2
-4V
RESET
XRES
GND
XRES
XRES
XRES
C42
10uF16BP
R56
4K7
C62
4.7uF16
C63
47uF16
12
D6
1N4148
1
2
D7
1N4148
NC
2
GND
3
RES 5
CAP 4
VCC
1
IC7
M51953A
R68 1K
C71
100nF
TP8
TP9
5VD
SW2
NIU
M
I
D
I
MAIN SECTION
IN
RXD
TXD2
1
3
Q11
BC560B
R66
10K
R67
10K
1
2
4
3
L11
SBT0160W 1
2
D8
1N4148
R73
220
R74
1K
14
2
53
JK6
MGPR5L
C72
100nFC
C73
100nFC
NC
1
LA
2
LC
3
NC
4GND 5
OUT 6
EN 7
VCC 8
IC8
6N137
5VD
5VD
OUT
SUSTAIN
from Cpu Board Cn3
MODSEL
DAMP
1
2
4
3
L9
SBT0160W
L10
SBT0460
R64
220
R65
220
1
2
4
3
L12
SBT0160W
R75
1K
R76
22K
2
1
3
Q12
BC549B
R77
22K
1
2
D9
1N4148
1
2
D10
1N4148
14
2
53
JK5
MGPR5L
3
1
2
JK7
HLJ052001110 C74
100nF
5%
C69
4.7nFC
CERAMIC DISK 20%
R85
10K
3
4
5
6
7
2
1
8
9
10
11
12
13
14
CN10
AMPC1.2714P
XRES
TXD1
RXD1
DAMP
MODSEL5VD
5VD
MODSEL = 0V R86
10K
NIU
JIG TEST
SD
SCK
DACC L
R
C35
10uF16
C43
10uF16BP
2
13
FL1
ELKTR391CA
C53
100uF16
C54
100uF16
R57
4K7
R61 1K
R62 1K
R63 1K
D
V
D
D
4
A
V
D
D
7
A
V
D
D
8
LRCK
13
CLK
16
SI/LSI
15
NC
3
4/8FS
1
LR/RSI
14
L.OUT 11
R.OUT 6
R.REF 9
L.REF 10
D
G
N
D
2
A
G
N
D
5
A
G
N
D
1
2
IC6
UPD6376GS
FLAT
C68
100nFC
DACC
SCK
SD
5VD 5VA
5VD
L16
EXCELDR25V
R88
0
NIU
C67
100uF16
C57
100nF
C70
100nF
LL
L
RR
R
C39
10uF16BP
C40
10uF16BP
C41
10uF16
C45
10uF16BP
TP1
TP2
TP3
TP4
TP5
TP6
C49
10nF
C50
10nF
C52 330pF
6
5
7
IC4B
M5218P
6
5
7
IC5B
M5218P
C61 82pF
1
2
D5
1N4148
R28 1K
R30 1K
R33 15K
R39
12K
R41
100K
R42
100K
R43
10K
R44
10K
R54 27K
FIX2 100nFC
C58 100NFC
C59 100NFC
C64 100NFC
C65 100NFC
8V
8V 8V
8V
R35
2K2
R
L/M
O
U
T
P
U
T
3
1
2
JK3
HLJ052001110
L6
EXCELDR25V
L7
EXCELDR25V
3
1
2
JK4
HLJ052001110R29 1K
R31 1K R36 680
R37 680
2
13
FL3
ELKTR391CA
2
13
FL4
ELKTR391CA
3
1
2
Q3
2SC2878
3
1
2
Q4
2SC2878
*
*
*
*

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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10 July, 1999
12
LEFT
T
O
M
A
I
N
S
E
C
T
.
POWER SECTION
P
H
O
N
E
S
1
2
V
S
2
OUT 1 MUTE
5
IN+
8
IN-
6SVR 7
THR 4
G
1
6
G
1
5
G
1
4
G
1
3
G
1
2
G
1
1
G
1
0
G
9
B
S
3
IC2
TDA1905
C8
10uF25 C9
47uF16 C11
2200uF16
C33
100nFC
R17
10K
C14
100nF
R16
100
1/4W
VI
1
G
N
D
3
VO 2
IC3
L4940V5
TO-220 with heat-sink
C24
10uF16
C34
100nFC
8
7
3
2
4
5
1
JK1
YKB21_5006
L3
L1
L2
C30
1uF50
8
7
3
2
4
5
1
JK8
YKB21_5006
L13
L14
L15
AGND
DGND
DGND
9V
5VA
5VA
VPD
5VA
R8
100I
R7
100I
R83
100I
R84
100I
L1=L2=L3=L13=L14=L15=BLO3RN2-R62T2
1
2
D1
1N4002
RIGHT
+
-
12V/1A
FROM MAIN SECT.
AGND
LOUT
FROM MAIN
SECT.
R6
10K
V
S
2
OUT 1 MUTE
5
IN+
8
IN-
6SVR 7
THR 4
G
1
6
G
1
5
G
1
4
G
1
3
G
1
2
G
1
1
G
1
0
G
9
B
S
3
IC1
TDA1905
C2
2200uF25
C3
100uF25
C5
47uF16 C7
2200uF16
C19
100nF
C20
100nF
R27
2.2 3W
1
2
4
3
L4
PLT1-R53C
EMI_FILTER
C29
1uF50
C4
10uF25
C13
100nF
R5
100
1/4W
1 2
SW1
SPUN 19F
C1
3300uF25
12
D3
BY251
2
1
CN8
CONN_2X1
2
1
CN9
CONN_2X1
R22
100I
R87
0 NIU
R82
0
R81
0
R80
0
R79
0
NIU
R78
0
NIU
1
2
3
JK2
HEC-2305-01-230
R
AGND
ROUT
R1
10K
R3
2K2
R4
820
R14
47K
C12
47uF16
C15
220nF
C18
33nF
5%
1
2
D2
BZX79C6V2
R24
nc
C21
nc
5%
R26
470
R2
1
1/4W
C28
1uF50
R70
2K7
R69
1K8
C25
4.7uF25
C27
1uF50
C6
22uF16
R13
100
R12
10K
R11
10K
R10
4K7
R15
150K
2
1
3
Q2
BC549B
R9
1K 2
1
3
Q1
BC549B
VPD
5VA
T
O
S
P
E
A
K
E
R
S
GND
LSR
GND
LSL
High Freq. Boost
Low Freq. Boost
LEFT RIGTH
R19 C17 R23 C22
R4 C18 R24 C21
L
R18
10K
R19
820
C16
220nF
C17
33nF
5%
R23
nc
C22
nc
5%
R25
470
3
4
2
1
CN3
5045-04A
R20
1
1/4W
C31
1uF50
R72
2K7
R71
1K8
C26
4.7uF25
C32
1uF50
C10
22uF16 R21
2K2
t
o
p
o
w
e
r
s
e
c
t
.
AGND
ROUT
AGND
LOUT
1
2
D4
BZX79C4V7
2
1
3
Q10
BC560B
R45 1K
R47 1K
R48
1K
R51
47K
C55
1uF50
2
1
CN4
CONN_2X1
2
1
CN5
CONN_2X1
9VA
3
1
2
Q6
2SC2878
3
1
2
Q5
2SC2878
-4V
XRES
f
r
o
m
p
o
w
e
r
s
u
p
p
l
y
C36
1000uF16
C37
100uF16 C38
47uF16
C44
10uF16BP
L5
EXCELDR25V
C51 330pF
C56
47uF16
2
3
1
84
IC4A
M5218P
2
3
1
84
IC5A
M5218P
C60 82pF
2
13
Q7
BD371
2
1
3
Q8
BC549B
2
1
3
Q9
BC549B
R32 15K
R38
12K
R40 1K
R46 1K
R49
220K
R50
47K
R52
47K
R53 27K
R55
100K
R58
4K7
R59
220K
R60
nc
AGND
DGND
DGND
9V
5VA
5VA
5VA 5VD 9VA
8V 9VA
L8
EXCELDR25V
NIU C46
1000uF16
NIU
R34
2K2
-4V
RESET
XRES
GND
XRES
XRES
XRES
C42
10uF16BP
R56
4K7
C62
4.7uF16
C63
47uF16
12
D6
1N4148
1
2
D7
1N4148
NC
2
GND
3
RES 5
CAP 4
VCC
1
IC7
M51953A
R68
1K
C71
100nF
TP8
TP9
5VD
SW2
NIU
M
I
D
I
MAIN SECTION
IN
RXD
TXD2
1
3
Q11
BC560B
R66
10K
R67
10K
1
2
4
3
L11
SBT0160W 1
2
D8
1N4148
R73
220
R74
1K
14
2
53
JK6
MGPR5L
C72
100nFC
C73
100nFC
NC
1
LA
2
LC
3
NC
4GND 5
OUT 6
EN 7
VCC 8
IC8
6N137
5VD
5VD
OUT
SUSTAIN
from Cpu Board Cn3
MODSEL
DAMP
1
2
4
3
L9
SBT0160W
L10
SBT0460
R64
220
R65
220
1
2
4
3
L12
SBT0160W R75
1K
R76
22K
2
1
3
Q12
BC549B
R77
22K
1
2
D9
1N4148
1
2
D10
1N4148
14
2
53
JK5
MGPR5L
3
1
2
JK7
HLJ052001110 C74
100nF
5%
C69
4.7nFC
CERAMIC DISK 20%
R85
10K
3
4
5
6
7
2
1
8
9
10
11
12
13
14
CN10
AMPC1.2714P
XRES
TXD1
RXD1
DAMP
MODSEL
5VD
5VD
MODSEL = 0V
JIG TEST
R86
10K
NIU
SD
SCK
DACC L
R
C35
10uF16
C43
10uF16BP
2
13
FL1
ELKTR391CA
C53
100uF16
C54
100uF16
R57
4K7
R61 1K
R62 1K
R63 1K
D
V
D
D
4
A
V
D
D
7
A
V
D
D
8
LRCK
13
CLK
16
SI/LSI
15
NC
3
4/8FS
1
LR/RSI
14
L.OUT 11
R.OUT 6
R.REF 9
L.REF 10
D
G
N
D
2
A
G
N
D
5
A
G
N
D
1
2
IC6
UPD6376GS
FLAT
C68
100nFC
DACC
SCK
SD
5VD 5VA
5VD
L16
EXCELDR25V
R88
0
NIU
C67
100uF16
C57
100NF
C70
100NF
LL
L
RR
R
C39
10uF16BP
C40
10uF16BP
C41
10uF16
C45
10uF16BP
TP1
TP2
TP3
TP4
TP5
TP6
C49
10nF
C50
10nF
C52 330pF
6
5
7
IC4B
M5218P
6
5
7
IC5B
M5218P
C61 82pF
1
2
D5
1N4148
R33
15K
R39
12K
R41
100K
R42
100K
R43
10K
R44
10K
R54 27K
FIX2 100nFC
C58 100NFC
C59 100NFC
C64 100NFC
C65 100NFC
8V
8V 8V
8V
R35
2K2
*
*
*
*
CIRCUIT DIAGRAM (MAIN PCB ASSY EM-10)

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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10
July, 1999
13
CPU PCB ASSY ASSY 7711002000 for EM-20
ASSY 7711103000 for EM-10
E
View from component side View from solder side

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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10 July, 1999
CIRCUIT DIAGRAM (CPU PCB ASSY EM-20)
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
A21
5VD
ADDRESS BUS
DATA BUS
PORT BUS & CONTROL BUS
4
5
6
7
8
9
3
2
1
RA7
8X10Ks
4
5
6
7
8
9
3
2
1
RA8
8X10Ks
4
5
6
7
8
9
3
2
1
RA10
8X10Ks
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0 D15
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
WD7
WD6
WD5
WD4
WD3
WD7
WD6
WD5
WD4
WD3
WD2
WD1
WD0
5VD
5VD
A19
43
A18
2
A17
3
A16
34
A15
35
A14
36
A13
37
A12
38
A11
39
A10
40
A9
41
A8
42
A7
4
A6
5
A5
6
A4
7
A3
8
A2
9
A1
10
A0
11
A-1(D15)
31
OE
14 CE
12
BYTE 33
D0 15
D1 17
D2 19
D3 21
D4 24
D5 26
D6 28
D7 30
D8 16
D9 18
D10 20
D11 22
D12 25
D13 27
D14 29
VDD 23
VSS 13
VSS 32
NC 1 A20
44
IC9
K5258149_1.0
64Mbit 44 pin SOP 100ns
A19
43
A18
2
A17
3
A16
34
A15
35
A14
36
A13
37
A12
38
A11
39
A10
40
A9
41
A8
42
A7
4
A6
5
A5
6
A4
7
A3
8
A2
9
A1
10
A0
11
A-1(D15)
31
OE
14
CE
12
BYTE 33
D0 15
D1 17
D2 19
D3 21
D4 24
D5 26
D6 28
D7 30
D8 16
D9 18
D10 20
D11 22
D12 25
D13 27
D14 29
VDD 23
VSS 13
VSS 32
NC 1
NC 44
IC13
K5258152_1.0
16MBit Rom 100ns SOP 44 pin
ADDRESS BUS
DATA BUS
PORT BUS & CONTROL BUS
WA21
WA22
C4
0.1s
C5
0.1s
C6
0.1s
C7
0.1s
V
D
D
1
8
V
D
D
5
4
V
D
D
9
0
V
D
D
1
2
6
G
N
D
1
9
G
N
D
5
5
G
N
D
9
1
G
N
D
1
2
7
G
N
D
1
0
4
G
N
D
1
4
2
XE
112
X68
113
XMSF
114
TEST
106
EA14
45
EA13
42
EA12
43
EA11
36
EA10
33
EA9
38
EA8
40
EA7
41
EA6
39
EA5
37
EA4
35
EA3
34
EA2
32
EA1
30
EA0
28
ED7
29
ED6
27
ED5
25
ED4
23
ED3
21
ED2
22
ED1
24
ED0
26
ECS
31
EWE
44
CA19
66
CA18
67
CA17
69
CA16
68
CA15
70
CA14
71
CA13
74
CA12
73
CA11
76
CA10
80
CA5
75
CA4
77
CA3
79
CA2
81
CA1
84
CA0
86
CD7
85
CD6
87
CD5
89
CD4
93
CD3
95
CD2
94
CD1
92
CD0
88
RESET
99
DS(RD)
78
RXW(WR)
72
CS
97
ALE(AS)
100
CK
105 IOCK
103
INT5
111
INT4
110
INT3
109
INT2
108
EXWAIT
115
LD7 65
LD6 64
LD5 63
LD4 62
LD3 61
LD2 60
LD1 59
LD0 58
LERD 57
RWWR 56
RSCD 53
SC5 46
SC4 47
SC3 48
SC2 49
SC1 50
SC0 51
WA19 134
WA18 135
WA17 137
WA16 136
WA15 138
WA14 139
WA13 141
WA12 140
WA11 4
WA10 7
WA9 2
WA8 144
WA7 143
WA6 1
WA5 3
WA4 5
WA3 6
WA2 8
WA1 9
WA0 11
WD7 10
WD6 12
WD5 14
WD4 16
WD3 20
WD2 17
WD1 15
WD0 13
WCS7/WA20 133
WCS6 132
WCS5 131
WCS4 130
WCS3 129
WCS2 128
WCS1 125
WCS0 124
DACC(MX) 122
DACB(INH) 123
DACA(LE) 120
SCK 121
SD 119
XCS7 116
CS6 98
XCS5 82
XCS4 83
XCS3 118
XCS2 117
XCS1 52
XCS0
96
GPINT
107
GAINT
101
WAIT
102
IC1
TC6116
C15
22/16s
4
5
6
7
8
9
3
2
1
RA3
8X10Ks
4
5
6
7
8
9
3
2
1
RA4
8X10Ks
45
6
7
8
3
2
1
RA13
4X100s
45
6
7
8
3
2
1
RA14
4X100s
45
6
7
8
3
2
1
RA15
4X100s
A23
A22
A21
A20
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
LCDLE
WA20
WA19
WA18
WA17
WA16
WA15
WA14
WA13
WA12
WA11
WA10
WA9
WA8
WA7
WA6
LCD7
LCD6
LCD5
LCD4
LCD3
LCD2
LCD1
LCD0
5VD
5VD
5VD
C1
0.1s
C2
0.1s
C3
0.1s
BREQ
49
STBY
112
MD2
111
MD1
110
MD0
109
TXD2
96
RXD2
95
TXD1
94
RXD1
93
P6-7
80
P6-6
79
P6-5
78
P6-4
77
P6-3
76
P6-2
75
P6-1
74
P6-0
73
P5-7
72
P5-6
71
P5-5
70
P5-4
69
P5-3
68
P5-2
67
P5-1
66
P5-0
65
AN3
86
AN2
85
AN1
84
AN0
83
AVCC
87
AVSS
82
SCK2/IRQ3
92
SCK1/IRQ2
91
IRQ1
90
IRQ0
89
P3-7
54
P3-6
53
P3-5
52
P3-4
51
P3-3
50
EXTAL
98
XTAL
99
NMI
2
P4-7 63
P4-6 62
P4-5 61
P4-4 60
P4-3 59
P4-2 58
P4-1 57
P4-0 56
A23 45
A22 44
A21 43
A20 42
A19 41
A18 40
A17 39
A16 38
A15 36
A14 35
A13 34
A12 33
A11 32
A10 31
A9 30
A8 29
A7 28
A6 27
A5 26
A4 25
A3 24
A2 23
A1 22
A0 21
D15 19
D14 18
D13 17
D12 16
D11 15
D10 14
D9 13
D8 12
D7 11
D6 10
D5 9
D4 8
D3 7
D2 6
D1 5
D0 4
RD 104
HWR 105
LWR 106
RFSH 107
AS 103
WAIT 47
E102
PHAI 101
BACK 48
RES 1
V
S
S
3
V
S
S
2
0
V
S
S
3
7
V
S
S
4
6
V
S
S
6
4
V
S
S
8
1
V
S
S
9
7
V
S
S
1
0
0
V
C
C
5
5
V
C
C
8
8
V
C
C
1
0
8
IC2
HD6415108
C14
22/16s
4
5
6
7
8
9
3
2
1
RA1
8X10Ks
4
5
6
7
8
9
3
2
1
RA2
8X10Ks
45
6
7
8
3
2
1
RA11
4X10Ks
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A23
A22
A21
A20
A19
A18
A17
A16
XGAINT
XGPINT
RXD1
TXD1
RXD1
RXDS
RXDS
SSD7
SSD6
SSD5
SSD4
SSD3
SSD2
SSD1
SSD7
SSD6
SSD5
SSD4
SSD3
SSD2
SSD1
5VD
5VD
5VD
NC
C8
0.1s
C17
22/16s
R3
100s
R4 100s
R8
100s
R9
10Ks
R18
10Ks
45
6
7
8
3
2
1
RA12
4X100s
C35
0.1s
C36
0.1s
C37
0.1s
C38
0.1s
45
6
7
8
3
2
1
RA16
4X100s
R21
100s
XRD
XWRH
XWRL
XAS
XWAIT
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
PHAI
XGPINT
XGAINT
SSD0 SSD0
SC4
SC3
SC2
SC1
SC0
DAMP
RIBB
MODSEL
5VREF 5VD
5VD
45
6
7
8
3
2
1
RA5
4X10Ks
C26
0.1s
C27
0.1s
20MHz
PHAI
XWAIT
XAS
XRES
XRD
XWRH
A15
A14
A13
A12
A11
A10
A5
A4
A3
A2
A1
A0
XRD
XWRH
XWRL
XAS
D15
D14
D13
D12
D11
D10
D9
D8
XGPINT
XGAINT
XGP4
LCDRW
LCDRS
WA19
WA18
WA17
WA16
WA15
WA14
WA13
WA12
WA11
WA10
WA9
WA8
WA7
WA6
WA5
WA4
WA3
WA2
WA1
WA0
WD7
WD6
WD5
WD4
WD3
WD2
WD1
WD0
WA20
WA5
WA4
WA3
WA2
WA1
WA0
5VD
5VD
R1
2K2s
R22 NIU
R23
0s
XWRL
TP1
1
2
4
5
3
IC7
TC7S08F
1
2
4
5
3
IC8
TC7S08F
R13 NIU
XRAM
XROM
XRD
XWRL
XRES
A17
A17
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A16
WD2
WD1
WD0
5VD
5VD
5VD
A15
31
A14
3
A13
28
A12
4
A11
25
A10
23
A9
26
A8
27
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
CS2
30
CS1
22
WE
29
OE
24
I/O8 21
I/O7 20
I/O6 19
I/O5 18
I/O4 17
I/O3 15
I/O2 14
I/O1 13
NC 1
A16 2
VDD 32
GND 16
IC4
HM628128LPF-7SL
FLAT
A15
31
A14
3
A13
28
A12
4
A11
25
A10
23
A9
26
A8
27
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
CS2
30
CS1
22
WE
29
OE
24
I/O8 21
I/O7 20
I/O6 19
I/O5 18
I/O4 17
I/O3 15
I/O2 14
I/O1 13
NC 1
A16 2
VDD 32
GND 16
IC5
HM628128LPF-7SL
FLAT
C20
100ps
C25
0.1s
to LCD
C11
0.1s
C13
0.1s
3
4
5
6
7
2
1
8
9
10
11
12
13
14
CN5
AMPC1.2714P
C44 22pFs
C45 22pFs
C46 22pFs
C47 22pFs
C48 22pFs
C49 22pFs
C50 22pFs
C51 22pFs
C52 22pFs
C53 22pFs
C54 22pFs
D7
D6
D5
D4
D3
D2
D1
D0
LCD6
LCD4
LCD2
LCD7
LCD5
LCD3
LCD6
LCD4
LCD2
LCD0
LCDRW
LCD7
LCD5
LCD3
LCD1
LCDLE
LCDRS
5VBK
XRD
XWRH
to Contol Board Cn1
TP2
TP3
C22
0.1s
C28
0.047F5.5V
DYNACAP
3
4
5
6
7
8
2
1
9
20
19
18
17
16
15
14
13
12
1110
CN4
AMPC1.2720P
R20
1Ks
C32
22/16s
C33
22/16s C34
22/16s
C39 22pFs
C40 22pFs
C41 22pFs
C42 22pFs
C43 22pFs
D15
D14
D13
D12
D11
D10
D9
D8
LCD0
LCDRW
VLCD
LCD1
LCDLE
LCDRS
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
SC0
SC1
SC2
SC3
SC4
RIBB
VLCD
RIBB
5VBK
5VD
5VREF
5VD
5VD
R17
270S
R19
NIU
Test
C24
0.1s
1
2
4
5
3IC10
TC7S00F
51
4
3
2
IC11
TC7SU04F
21
3
D1
RB420D
TP4
XRAM
XRAM
XWRH
XRD
XRES
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A16
XRD
XROM
XRES
XRES
TXD1
RXD1
DAMP
DACC
SCK
SD
MODSEL
5VD
5VD
5VD 5VBK
C55
22/16s
1
2
4
5
3
IC12
TC7SH32F
CHIP
C29
0.1S
C21
100ps
R15
270S
R16
100KS
C30
NIU
3
4
5
6
7
2
1
8
9
10
11
12
13
14
CN3
AMPC1.2714P
5VD
WCS0
WCS1
WCS2
RAM
ROM
C9
0.1s
C16
22/16s
45
6
7
8
3
2
1
RA6
4X100s
A14 1
A13 26
A12 2
A11 23
A10 21
A9 24
A8 25
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
CS 20
WR 27
OE 22
V
C
C
2
8
G
N
D
1
4
D7
19
D6
18
D5
17
D4
16
D3
15
D2
13
D1
12
D0
11
IC6
HM62256LFP-7T
4
5678
321
RA9
4X10Ks
ED7
ED6
ED5
ED4
ED3
ED2
ED1
ED0
EA14
EA13
EA12
EA11
EA10
EA9
EA8
EA7
EA6
EA5
EA4
EA3
EA2
EA1
EA0
ED7
ED6
ED5
ED4
ED3
ED2
ED1
ED0
XGP4
DACC
SCK
SD
5VD 5VD
C10
0.1s
C12
4n7s
C18
22pFs
C19
12pFs
17
8
4
IC3A
TC7WU04F
62
IC3B
TC7WU04F
35
IC3C
TC7WU04F
R2
1Ms
R5
100s
R6
100s
R7
1K5s
X1
MA-406-20MHz
XRES
20MHz
5VD
C23
100ps
C31
100ps
EM-20
EM-10
Model IC9
8Mbit
64Mbit
to Main Board Cn10
R13
NIU 0 Ohm
R23R22
NIU
0 Ohm 0 Ohm NIU
IC7;C26 IC8;C27
Memory Setting
Yes Ye s
NIU NIU
14

A
B
C
D
E
F
G
H
I
L
M
N
O
P
Q
R
S
T
U
J
K
12345678910 1213141516171819202122232425262728293011
EM-20/EM-10
July, 1999
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
A21
5VD
ADDRESS BUS
DATA BUS
PORT BUS & CONTROL BUS
4
5
6
7
8
9
3
2
1
RA7
8X10Ks
4
5
6
7
8
9
3
2
1
RA8
8X10Ks
4
5
6
7
8
9
3
2
1
RA10
8X10Ks
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0 D15
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
WD7
WD6
WD5
WD4
WD3
WD7
WD6
WD5
WD4
WD3
WD2
WD1
WD0
5VD
5VD
A19
43
A18
2
A17
3
A16
34
A15
35
A14
36
A13
37
A12
38
A11
39
A10
40
A9
41
A8
42
A7
4
A6
5
A5
6
A4
7
A3
8
A2
9
A1
10
A0
11
A-1(D15)
31
OE
14 CE
12
BYTE 33
D0 15
D1 17
D2 19
D3 21
D4 24
D5 26
D6 28
D7 30
D8 16
D9 18
D10 20
D11 22
D12 25
D13 27
D14 29
VDD 23
VSS 13
VSS 32
NC 1 A20
44
IC9
K5258153_1.0
8Mbit 44 pin SOP 100ns
A19
43
A18
2
A17
3
A16
34
A15
35
A14
36
A13
37
A12
38
A11
39
A10
40
A9
41
A8
42
A7
4
A6
5
A5
6
A4
7
A3
8
A2
9
A1
10
A0
11
A-1(D15)
31
OE
14
CE
12
BYTE 33
D0 15
D1 17
D2 19
D3 21
D4 24
D5 26
D6 28
D7 30
D8 16
D9 18
D10 20
D11 22
D12 25
D13 27
D14 29
VDD 23
VSS 13
VSS 32
NC 1
NC 44
IC13
K5258154_1.0
16MBit Rom 100ns SOP 44 pin
ADDRESS BUS
DATA BUS
PORT BUS & CONTROL BUS
WA21
WA22
C4
0.1s
C5
0.1s
C6
0.1s
C7
0.1s
V
D
D
1
8
V
D
D
5
4
V
D
D
9
0
V
D
D
1
2
6
G
N
D
1
9
G
N
D
5
5
G
N
D
9
1
G
N
D
1
2
7
G
N
D
1
0
4
G
N
D
1
4
2
XE
112
X68
113
XMSF
114
TEST
106
EA14
45
EA13
42
EA12
43
EA11
36
EA10
33
EA9
38
EA8
40
EA7
41
EA6
39
EA5
37
EA4
35
EA3
34
EA2
32
EA1
30
EA0
28
ED7
29
ED6
27
ED5
25
ED4
23
ED3
21
ED2
22
ED1
24
ED0
26
ECS
31
EWE
44
CA19
66
CA18
67
CA17
69
CA16
68
CA15
70
CA14
71
CA13
74
CA12
73
CA11
76
CA10
80
CA5
75
CA4
77
CA3
79
CA2
81
CA1
84
CA0
86
CD7
85
CD6
87
CD5
89
CD4
93
CD3
95
CD2
94
CD1
92
CD0
88
RESET
99
DS(RD)
78
RXW(WR)
72
CS
97
ALE(AS)
100
CK
105 IOCK
103
INT5
111
INT4
110
INT3
109
INT2
108
EXWAIT
115
LD7 65
LD6 64
LD5 63
LD4 62
LD3 61
LD2 60
LD1 59
LD0 58
LERD 57
RWWR 56
RSCD 53
SC5 46
SC4 47
SC3 48
SC2 49
SC1 50
SC0 51
WA19 134
WA18 135
WA17 137
WA16 136
WA15 138
WA14 139
WA13 141
WA12 140
WA11 4
WA10 7
WA9 2
WA8 144
WA7 143
WA6 1
WA5 3
WA4 5
WA3 6
WA2 8
WA1 9
WA0 11
WD7 10
WD6 12
WD5 14
WD4 16
WD3 20
WD2 17
WD1 15
WD0 13
WCS7/WA20 133
WCS6 132
WCS5 131
WCS4 130
WCS3 129
WCS2 128
WCS1 125
WCS0 124
DACC(MX) 122
DACB(INH) 123
DACA(LE) 120
SCK 121
SD 119
XCS7 116
CS6 98
XCS5 82
XCS4 83
XCS3 118
XCS2 117
XCS1 52
XCS0
96
GPINT
107
GAINT
101
WAIT
102
IC1
TC6116
C15
22/16s
4
5
6
7
8
9
3
21
RA3
8X10Ks
4
5
6
7
8
9
3
21
RA4
8X10Ks
45
6
7
8
3
2
1
RA13
4X100s
45
6
7
8
3
2
1
RA14
4X100s
45
6
7
8
3
2
1
RA15
4X100s
A23
A22
A21
A20
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
LCDLE
WA20
WA19
WA18
WA17
WA16
WA15
WA14
WA13
WA12
WA11
WA10
WA9
WA8
WA7
WA6
LCD7
LCD6
LCD5
LCD4
LCD3
LCD2
LCD1
LCD0
5VD
5VD
5VD
C1
0.1s
C2
0.1s
C3
0.1s
BREQ
49
STBY
112
MD2
111
MD1
110
MD0
109
TXD2
96
RXD2
95
TXD1
94
RXD1
93
P6-7
80
P6-6
79
P6-5
78
P6-4
77
P6-3
76
P6-2
75
P6-1
74
P6-0
73
P5-7
72
P5-6
71
P5-5
70
P5-4
69
P5-3
68
P5-2
67
P5-1
66
P5-0
65
AN3
86
AN2
85
AN1
84
AN0
83
AVCC
87
AVSS
82
SCK2/IRQ3
92
SCK1/IRQ2
91
IRQ1
90
IRQ0
89
P3-7
54
P3-6
53
P3-5
52
P3-4
51
P3-3
50
EXTAL
98
XTAL
99
NMI
2
P4-7 63
P4-6 62
P4-5 61
P4-4 60
P4-3 59
P4-2 58
P4-1 57
P4-0 56
A23 45
A22 44
A21 43
A20 42
A19 41
A18 40
A17 39
A16 38
A15 36
A14 35
A13 34
A12 33
A11 32
A10 31
A9 30
A8 29
A7 28
A6 27
A5 26
A4 25
A3 24
A2 23
A1 22
A0 21
D15 19
D14 18
D13 17
D12 16
D11 15
D10 14
D9 13
D8 12
D7 11
D6 10
D5 9
D4 8
D3 7
D2 6
D1 5
D0 4
RD 104
HWR 105
LWR 106
RFSH 107
AS 103
WAIT 47
E102
PHAI 101
BACK 48
RES 1
V
S
S
3
V
S
S
2
0
V
S
S
3
7
V
S
S
4
6
V
S
S
6
4
V
S
S
8
1
V
S
S
9
7
V
S
S
1
0
0
V
C
C
5
5
V
C
C
8
8
V
C
C
1
0
8
IC2
HD6415108
C14
22/16s
4
5
6
7
8
9
3
2
1
RA1
8X10Ks
4
5
6
7
8
9
3
2
1
RA2
8X10Ks
45
6
7
8
3
2
1
RA11
4X10Ks
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A23
A22
A21
A20
A19
A18
A17
A16
XGAINT
XGPINT
RXD1
TXD1
RXD1
RXDS
RXDS
SSD7
SSD6
SSD5
SSD4
SSD3
SSD2
SSD1
SSD7
SSD6
SSD5
SSD4
SSD3
SSD2
SSD1
5VD
5VD
5VD
NC
C8
0.1s
C17
22/16s
R3
100s
R4 100s
R8
100s R9
10Ks
R18
10Ks
45
6
7
8
3
2
1
RA12
4X100s
C35
0.1s
C36
0.1s
C37
0.1s
C38
0.1s
45
6
7
8
3
2
1
RA16
4X100s
R21
100s
XRD
XWRH
XWRL
XAS
XWAIT
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
PHAI
XGPINT
XGAINT
SSD0 SSD0
SC4
SC3
SC2
SC1
SC0
DAMP
RIBB
MODSEL
5VREF 5VD
5VD
45
6
7
8
3
2
1
RA5
4X10Ks
20MHz
PHAI
XWAIT
XAS
XRES
XRD
XWRH
A15
A14
A13
A12
A11
A10
A5
A4
A3
A2
A1
A0
XRD
XWRH
XWRL
XAS
D15
D14
D13
D12
D11
D10
D9
D8
XGPINT
XGAINT
XGP4
LCDRW
LCDRS
WA19
WA18
WA17
WA16
WA15
WA14
WA13
WA12
WA11
WA10
WA9
WA8
WA7
WA6
WA5
WA4
WA3
WA2
WA1
WA0
WD7
WD6
WD5
WD4
WD3
WD2
WD1
WD0
WA20
WA5
WA4
WA3
WA2
WA1
WA0
5VD
5VD
R1
2K2s
R23
NIU
R22 0s
C26
NIU
C27
NIU
XWRL
TP1
XRAM
XROM
XRD
XWRL
XRES
A17
A17
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A16
WD2
WD1
WD0
5VD
5VD
5VD
A15
31
A14
3
A13
28
A12
4
A11
25
A10
23
A9
26
A8
27
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
CS2
30
CS1
22
WE
29
OE
24
I/O8 21
I/O7 20
I/O6 19
I/O5 18
I/O4 17
I/O3 15
I/O2 14
I/O1 13
NC 1
A16 2
VDD 32
GND 16
IC4
HM628128LPF-7SL
FLAT
A15
31
A14
3
A13
28
A12
4
A11
25
A10
23
A9
26
A8
27
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
CS2
30
CS1
22
WE
29
OE
24
I/O8 21
I/O7 20
I/O6 19
I/O5 18
I/O4 17
I/O3 15
I/O2 14
I/O1 13
NC 1
A16 2
VDD 32
GND 16
IC5
HM628128LPF-7SL
FLAT
C20
100ps
C25
0.1s
R13 0s
1
2
4
5
3
IC7
NIU
1
2
4
5
3
IC8
NIU
to LCD
C11
0.1s
C13
0.1s
3
4
5
6
7
2
1
8
9
10
11
12
13
14
CN5
AMPC1.2714P
C44 22pFs
C45 22pFs
C46 22pFs
C47 22pFs
C48 22pFs
C49 22pFs
C50 22pFs
C51 22pFs
C52 22pFs
C53 22pFs
C54 22pFs
D7
D6
D5
D4
D3
D2
D1
D0
LCD6
LCD4
LCD2
LCD7
LCD5
LCD3
LCD6
LCD4
LCD2
LCD0
LCDRW
LCD7
LCD5
LCD3
LCD1
LCDLE
LCDRS
5VBK
XRD
XWRH
to Control Board CN1
TP2
TP3
C22
0.1s
C28
0.047F5.5V
DYNACAP
3
4
5
6
7
8
2
1
9
20
19
18
17
16
15
14
13
12
1110
CN4
AMPC1.2720P
R20
1Ks
C32
22/16s
C33
22/16s
C34
22/16s
C39 22pFs
C40 22pFs
C41 22pFs
C42 22pFs
C43 22pFs
D15
D14
D13
D12
D11
D10
D9
D8
LCD0
LCDRW
VLCD
LCD1
LCDLE
LCDRS
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
SC0
SC1
SC2
SC3
SC4
RIBB
VLCD
RIBB
5VBK
5VD
5VREF5VD
5VD
R17
270S
R19
NIU
Test
C24
0.1s
1
2
4
5
3IC10
TC7S00F
51
4
3
2
IC11
TC7SU04F
21
3
D1
RB420D
TP4
XRAM
XRAM
XWRH
XRD
XRES
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A16
XRD
XROM
XRES
XRES
TXD1
RXD1
DAMP
DACC
SCK
SD
MODSEL
5VD
5VD
5VD 5VBK
C55
22/16s
1
2
4
5
3
IC12
TC7SH32F
CHIP
C29
0.1S
C21
100ps
R15
270S
R16
100KS
C30
NIU
3
4
5
6
7
2
1
8
9
10
11
12
13
14
CN3
AMPC1.2714P
5VD
WCS0
WCS1
WCS2
Base Add. F000
RAM
ROM
C9
0.1s
C16
22/16s
45
6
7
8
3
2
1
RA6
4X100s
A14 1
A13 26
A12 2
A11 23
A10 21
A9 24
A8 25
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
CS 20
WR 27
OE 22
V
C
C
2
8
G
N
D
1
4
D7
19
D6
18
D5
17
D4
16
D3
15
D2
13
D1
12
D0
11
IC6
HM62256LFP-7T
4
5678
321
RA9
4X10Ks
ED7
ED6
ED5
ED4
ED3
ED2
ED1
ED0
EA14
EA13
EA12
EA11
EA10
EA9
EA8
EA7
EA6
EA5
EA4
EA3
EA2
EA1
EA0
ED7
ED6
ED5
ED4
ED3
ED2
ED1
ED0
XGP4
DACC
SCK
SD
5VD 5VD
C10
0.1s
C12
4n7s
C18
22pFs
C19
12pFs
17
8
4
IC3A
TC7WU04F
62
IC3B
TC7WU04F
35
IC3C
TC7WU04F
R2
1Ms
R5
100s
R6
100s
R7
1K5s
X1
MA-406-20MHz
XRES
20MHz
5VD
C23
100ps
C31
100ps
EM-20
EM-10
Model IC9
8Mbit
64Mbit
to Main Board Cn10
R13
NIU 0 Ohm
R23R22
NIU
0 Ohm 0 Ohm NIU
IC7;C26 IC8;C27
Memory Setting
Yes Ye s
NIU NIU
15
CIRCUIT DIAGRAM (CPU PCB ASSY EM-10)

A
B
C
D
E
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P
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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10 July, 1999
CONTROL PCB ASSY ASSY 7711003000 for EM-20
View from component side
16

A
B
C
D
E
F
G
H
I
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M
N
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P
Q
R
S
T
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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10
July, 1999
CIRCUIT DIAGRAM (CONTROL PCB ASSY EM-20)
SW15 SW16
1
2
D15
1
2
D16
S
S
D
6
S
S
D
7
ALL DIODES D1..D64 IN THIS SHEET ARE 1N4148
GROUP_A/B STYLE_SONG
SW12 SW13 SW14
1
2
D11
1
2
D12
1
2
D13
1
2
D14
S
S
D
3
S
S
D
4
S
S
D
5
SW4 SW5 SW6
1
2
D4
1
2
D5
1
2
D6
REC
DATA
M
U
X
TRANSPOSE
SW1
SW9 SW10 SW11
1
2
D1
1
2
D9
1
2
D10
S
S
D
0
S
S
D
1
S
S
D
2
SSC7
SSC6
D
A
T
A
KBD_VEL
SYNC_START BASS_INV
TONE1 TONE2 TONE3
STY_PROG+ STY_PROG-
SW17 SW18
SW25 SW26
SW33 SW34 SW35
SW41 SW42 SW43
1
2
D17
1
2
D18
1
2
D25
1
2
D26
1
2
D33
1
2
D34
1
2
D41
1
2
D42
1
2
D49
1
2
D50
SSC5
SSC4
SSC3
SSC2
SSC1
MODE_ORGANMODE_ARRANGER
MODULATION BEND_UP BEND_DWN
SW27
USER_WRITE START/STOP
TONE4 TONE5 TONE6
INTEL/LAYER UPPER 1/2
SW30
SW36 SW37 SW38
SW44 SW45 SW46
1
2
D30
1
2
D35
1
2
D36
1
2
D37
1
2
D38
1
2
D43
1
2
D44
1
2
D45
1
2
D46
1
2
D51
1
2
D52
1
2
D53
1
2
D54
MODE_MDRUM
ASSIGN VOLUME_UP VOLUME_DWN
1
2
D27
TEMPO+ TEMPO-
TONE_VAR
TONE7 TONE8
STY_MORPH+ STY_MORPH-
METRONOME
SW23 SW24
SW31 SW32
SW39 SW40
SW47 SW48
1
2
D23
1
2
D24
1
2
D31
1
2
D32
1
2
D39
1
2
D40
1
2
D47
1
2
D48
1
2
D55
1
2
D56
STYLE ONE TOUCH
UPPER+ UPPER-
ENDING
SW55 SW56
SW63 SW64
1
2
D63
1
2
D64
VARIATION
MUX
A
1
B
2
C
3
Y0 15
Y1 14
Y2 13
Y3 12
Y4 11
Y5 10
Y6 9
Y7 7
G1
6
G2A
4
G2B
5
V
C
C
1
6
G
N
D
8
IC6
74HC238
SC0
SC1
SC2
SC4
5VD
5VD
ACC_LOW+ ACC_LOW-
INTRO
SW52 SW53 SW54
SW60 SW61 SW62
1
2
D59
1
2
D60
1
2
D61
1
2
D62
BASS-
ORIGINAL FILL
SSC0
SSC1
SSC2
SSC3
SSC4
SSC5
SSC6
SSC7
C1
100nF
A
1
B
2
C
3
Y
0
1
5
Y
1
1
4
Y
2
1
3
Y
3
1
2
Y
4
1
1
Y
5
1
0
Y
6
9
Y
7
7
G
1
6
G
2
A
4
G
2
B
5
VCC 16
GND 8
IC8
74HC238
A
1
B
2
C
3
Y
0
1
5
Y
1
1
4
Y
2
1
3
Y
3
1
2
Y
4
1
1
Y
5
1
0
Y
6
9
Y
7
7
G
1
6
G
2
A
4
G
2
B
5
VCC 16
GND 8
IC9
74HC238
C4
33uF16
3
4
5
6
7
8
2
1
9
20
19
18
17
16
15
14
13
12
1110
CN1
AMPC1.2720P
SC0
SC1
SC2
SC3
SC4
RIBB
5VREF
5VD
C10
10uF16
DRUM+ DRUM-
CHORUSREVERBDEMO
SW49 SW50 SW51
SW57 SW58 SW59
1
2
D57
1
2
D58
SSC0
BASS+
TO RIBBON
R6
10K
R9
1K
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
RIBB
5VREF
R10
100K
R7
820
R8
820
R5
10K
NIU
1
2
3
4
5
6
8
7
CN5
5597-08APB
C9
1uF16
NIU
1
2
D65
BZW04-5V8B
TO LCD
Bulb Lamp
C6
100uF16
21
CN2
5045-02A
NIU 5VD
to Left Keyb Pcb to Right Keyb Pcb
3
4
5
6
7
8
2
1
9
10
11
12
13
14
15
16
CN4
AMPC1.2716P
3
4
5
6
7
8
2
1
9
10
11
12
13
14
15
16
CN3
AMPC1.2716P
MK0
BR0
MK1
BR1
MK2
BR2
MK3
BR3
MK4
BR4
MK5
BR5
MK6
BR6
MK7
BR7
B
R
0
B
R
1
B
R
2
B
R
3
B
R
4
B
R
5
B
R
6
B
R
7
M
K
0
M
K
1
M
K
2
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
5VD
B
R
0
B
R
1
B
R
2
B
R
3
B
R
4
B
R
5
B
R
6
B
R
7
M
K
0
M
K
1
M
K
2
M
K
3
M
K
4
M
K
5
M
K
6
M
K
7
C7
100nF
45678932
1
CA1
8x100pF
45678932
1
CA2
8x100pF
SC3SC4
0
1
0
0
1
1
SWITCHES
SWITCHES
MK0-MK7
BR0-BR7
X
X
M
K
3
M
K
4
M
K
5
M
K
6
M
K
7
C8
100nF
To CPU Board Cn4
17

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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10 July, 1999
View from component side
18
CONTROL PCB ASSY ASSY 7711101000 for EM-10

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C
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E
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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10
July, 1999
SW15 SW16
1
2
D15
1
2
D16
S
S
D
6
S
S
D
7
ALL DIODES D1..D64 IN THIS SHEET ARE 1N4148
GROUP_A/B STYLE_SONG
SW13
1
2
D13
S
S
D
3
S
S
D
4
S
S
D
5
SW4 SW5 SW6
1
2
D4
1
2
D5
1
2
D6
REC
1
2
D11
DATA
M
U
X
TRANSPOSE
SW1
SW9 SW10
1
2
D1
1
2
D9
1
2
D10
S
S
D
0
S
S
D
1
S
S
D
2
SSC7
SSC6
SW11
D
A
T
A
KBD_VEL
SYNC_START
TONE1 TONE2 TONE3
STY_PROG+ STY_PROG-
SW17 SW18
SW25
SW41 SW42 SW43
1
2
D17
1
2
D18
1
2
D25
1
2
D41
1
2
D42
SSC5
SSC4
SSC3
SSC2
SSC1
SW27
USER_WRITE
MODE_ARR_MDRUM MODE_ORGAN
START/STOP
TONE4 TONE5 TONE6
INTEL/LAYER
SW30
SW37 SW38
SW44 SW45 SW46
1
2
D30
1
2
D37
1
2
D38
1
2
D43
1
2
D44
1
2
D45
1
2
D46
1
2
D53
1
2
D54
VOLUME_UP VOLUME_DWN
1
2
D27
TEMPO+ TEMPO-
TONE_VAR
TONE7 TONE8
STY_MORPH+ STY_MORPH-
METRONOME
SW23 SW24
SW31 SW32
SW39 SW40
SW47 SW48
1
2
D23
1
2
D24
1
2
D31
1
2
D32
1
2
D39
1
2
D40
1
2
D47
1
2
D48
1
2
D55
1
2
D56
STYLE ONE TOUCH
UPPER+ UPPER-
ENDING
SW55 SW56
SW63 SW64
1
2
D63
1
2
D64
VARIATION
MUX
A
1
B
2
C
3
Y0 15
Y1 14
Y2 13
Y3 12
Y4 11
Y5 10
Y6 9
Y7 7
G1
6
G2A
4
G2B
5
V
C
C
1
6
G
N
D
8
IC6
74HC238
SC0
SC1
SC2
SC4
5VD
5VD
INTRO
SW53 SW54
SW60 SW61 SW62
1
2
D59
1
2
D60
1
2
D61
1
2
D62
ORIGINAL FILL
ARRANGER+ ARRANGER-
SSC0
SSC1
SSC2
SSC3
SSC4
SSC5
SSC6
SSC7
C1
100nF
A
1
B
2
C
3
Y
0
1
5
Y
1
1
4
Y
2
1
3
Y
3
1
2
Y
4
1
1
Y
5
1
0
Y
6
9
Y
7
7
G
1
6
G
2
A
4
G
2
B
5
VCC 16
GND 8
IC8
74HC238
A
1
B
2
C
3
Y
0
1
5
Y
1
1
4
Y
2
1
3
Y
3
1
2
Y
4
1
1
Y
5
1
0
Y
6
9
Y
7
7
G
1
6
G
2
A
4
G
2
B
5
VCC 16
GND 8
IC9
74HC238
C4
33uF16
3
4
5
6
7
8
2
1
9
20
19
18
17
16
15
14
13
12
1110
CN1
AMPC1.2720P
SC0
SC1
SC2
SC3
SC4
5VD
DEMO
SW57 SW59
1
2
D57
SSC0
CHORUS_REV
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
TO LCD
Bulb Lamp
C6
100uF16
21
CN2
5045-02A
NIU 5VD
45678932
1
CA1
8x100pF
to Left Keyb Pcb to Right Keyb Pcb
3
4
5
6
7
8
2
1
9
10
11
12
13
14
15
16
CN4
AMPC1.2716P
3
4
5
6
7
8
2
1
9
10
11
12
13
14
15
16
CN3
AMPC1.2716P
MK0
BR0
MK1
BR1
MK2
BR2
MK3
BR3
MK4
BR4
MK5
BR5
MK6
BR6
MK7
BR7
B
R
0
B
R
1
B
R
2
B
R
3
B
R
4
B
R
5
B
R
6
B
R
7
M
K
0
M
K
1
M
K
2
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
SSD0
SSD1
SSD2
SSD3
SSD4
SSD5
SSD6
SSD7
5VD
B
R
0
B
R
1
B
R
2
B
R
3
B
R
4
B
R
5
B
R
6
B
R
7
M
K
0
M
K
1
M
K
2
M
K
3
M
K
4
M
K
5
M
K
6
M
K
7
C7
100nF
45678932
1
CA2
8x100pF
SC3SC4
0
1
0
0
1
1
SWITCHES
SWITCHES
MK0-MK7
BR0-BR7
X
X
M
K
3
M
K
4
M
K
5
M
K
6
M
K
7
C8
100nF
To CPU Board Cn4
19
CIRCUIT DIAGRAM (CONTROL PCB ASSY EM-10)

A
B
C
D
E
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12345678910 1213141516171819202122232425262728293011
EM-20/EM-10 July, 1999
20
RIGHT CONTACT PCB ASSY w/RUBBER ASSY 7624504001
LEFT CONTACT PCB ASSY w/RUBBER ASSY 7624505001
CIRCUIT DIAGRAM (RIGHT CONT. PCB ASSY)
CIRCUIT DIAGRAM (LEFT CONT .PCB ASSY)
View from component side
View from component side